Akfix 840 Fire Block Spray Foam (1x12 Oz.)- Orange Color Fire Retardant Polyurethane Expanding Foam for Gap Filling, Insulation and Sealing on Window and Door, Fire Rated, Paintable | 12 Oz. 1 Pack
Condition: New
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Availability:
In Stock.
Arrives
Friday, Oct 30
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At a glance
- Condition
- New
- Size
- 1 Pack
- Material
- Polyurethane Foam
Features 4
- High Expansion for Wide Gap Filling: Effectively expands to fill large gaps and cavities, ensuring excellent coverage with minimal product use. Perfect for sealing around door and window frames, electrical fixtures, pipe inlets, and wall penetrations.
- Strong Bonding to Various Surfaces: Delivers superior adhesion to materials like wood, concrete, metal, and more for lasting results.
- Paintable Finish for Outdoor Durability: Once cured, the foam can be painted or coated to enhance UV resistance and blend seamlessly with surroundings.
- Class-A Fire Rated for Enhanced Safety: Akfix Fire Block offers superior fire resistance with a Class A fire rating, ensuring safer residential, commercial, and industrial applications. This UL-certified and ICC-approved product delivers enhanced protection and reliable performance across a wide range of environments.
Description
Starting its operations in the chemical construction field in 2001, Akfix focused on developing life-esteem chemical products and technologies to create permanent solutions for customer needs. Developing different products for different customer needs, Akfix serves its customers a wide product range. Professionals and amateurs all over the world are preferring Akfix products for more permanent and fruitful outcomes. DIY APPLICATIONS PROFESSIONAL APPLICATIONS
Specs 11
| Material | Polyurethane Foam |
|---|---|
| Brand | Akfix |
| Recommended Uses For Product | Thermal Insulation, Sound Insulation, Fire Resistance |
| Number of Packs | 1 |
| Manufacturer | Akfix |
| Brand Name | Akfix |
| Number of Items | 1 |
| Unit Count | 12 Ounce |
| Model Number | 840 |
| Manufacturer Part Number | AKF_840_12oz-1P |
| Material Type | Polyurethane Foam |
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Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Oct 30
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
Predictable expansion, reliable texture, easy to work with
Size: 2 Pack
The ONLY downside to this spray foam is the capacity of the 12oz can, I didn't realize the size until after I'd placed the order. The Akfix foam seems to work very well. Filled many holes in our basement's foam board insulation with one half-can. The foam expands nicely and adheres really well even on old surfaces. Texture when spraying out is smooth, not overwhelmingly gummy or sticky which is great to work with. Expansion happens within the first minute or so and it doesn't continue after that, perfect for my needs... Was able to smooth some areas down with a flat tool before the foam "set" when I didn't want it to protrude beyond a set limit. Just bought a few more cans in the 24oz size because there's more work to do! Would recommend this brand, good stuff.
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Reviewed in the United States on August 7, 2025 by Mel
Works well..
Size: 2 Pack
It works for what I need but the cans spray sporatically..Still good value for money spent..
Reviewed in the United States on July 31, 2025 by Vikibydesign
So far so good on patching a gap in a brick pizza oven...
Size: 1 Pack
I got this because I go over to my buddy's house a lot and he has a brick PIZZA OVEN that I LOVE TO USE. The last couple of times we used it, we both noticed some integrity issues in the pizza crust, so we took a closer look at the pizza oven and noticed some substantial gaps which I assume were letting some of the heat out and threw off our cook times. I apologize for rambling on, but we used some of this to patch those gaps and tried it out the next day and everything seems like it's back to normal. All of that said, only time will tell if this will hold up under such extreme temperatures so I will follow up in a month or so after we've used it at least another couple of times.
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Reviewed in the United States on May 6, 2024 by Blake D.
ok
Size: 2 Pack
not that easy to use
Reviewed in the United States on August 26, 2025 by Bob
Bust of contents
Size: 1 Pack
can emptied in seconds. Had no time to guide the product to cover the hole. Didn’t do the job - waste of money
Reviewed in the United States on October 14, 2024 by Elizabeth C. Russell
Better than the leading Competitor
Size: 1 Pack
I ordered this to seal some gaps in my air conditioner plenum area. I had used GreatStuff fire retardant insulation but ended up having to redo some work around the plenum. I ended up using this Akfix product to try out. I wasn't disappointed. It is so much easier to apply that GreatStuff and the flow comes out much smoother due to the slightly wider flow nozzle. It foams up just as well if not better. I also noticed it cleans off my hands much better than GreatStuff. It still sticks on your hands and clothes if a mess is made but, it does seem to come off easier if washing it off right away. I will gladly purchase and use this product again.
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Reviewed in the United States on April 23, 2024 by Andchelle
Great for Filling in Gaps
Size: 1 Pack
I got this because I wanted to test spray foam due to all the hype. I wanted something that would be more fire safe than the usual spray foam because quick basic research shows that the former insulation methods work better than most spray foam for a fire. So, I purchased this fire block. I didn't realize at the time that this in particular is for small gaps, not wider installations. It still works fine, however, for spraying around electrical outlets or filling in small holes to keep critters out. I am particularly thankful for something that can help block electrical fires as I have dealt with some on a small scale in the past. I definitely think that it is useful to keep a can or two on hand just in case.
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Reviewed in the United States on July 22, 2024 by Del W.
It's done the job well for me
Size: 1 Pack
he fire retardant feature is a big plus for peace of mind, especially when using it around windows and doors. The orange color is a bit unique, but it blends well once painted over, which is a nice touch. The foam expands effectively and fills gaps quite nicely. I used it to seal some drafty areas in my home, and I've noticed a significant difference in insulation. It’s pretty easy to apply; just aim and spray, and it expands quickly. One thing I really appreciate is that it's paintable, so I can easily match it to the color of my walls after it's fully cured. Overall, I’d recommend this spray foam if you’re looking for something reliable for insulation and sealing. It's done the job well for me, and I feel safer knowing it has that fire-blocking capability!
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Reviewed in the United States on July 10, 2025 by Eric